Journal article
Jahn-Teller Distortions and Infield Superconductivity of CuTl-1223 Phase

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Publication Details
Author list: M. Mumtaz, Tanzeel-ul-Rehman, M. Waqee-ur-Rehman, Y. Slimani and Nawazish A. Khan
Publisher: Springer Verlag (Germany)
Publication year: 2020
Journal: Journal of Superconductivity and Novel Magnetism
Journal name in source: Journal of Superconductivity and Novel Magnetism
Volume number: 33
Issue number: 2
Start page: 331
End page: 336
Number of pages: 6
ISSN: 1557-1939
Web of Science ID: 000511585200005
PubMed ID:
Scopus ID: 85068991407
eISSN: 1557-1947

The strong inter-planes coupling in cuprates is of immense importance in the field of high Tcsuperconductivity. For this purpose, Cu0.5Tl0.5Ba2Ca2Cu3O10−δ (CuTl-1223) superconducting phase was selected and Cu 3d9 was partially replaced with Zn 3d10 in CuO2 planes. The decrease in c-axis length and improvement in infield superconducting transport properties were observed after Zn doping at Cu sites in Cu0.5Tl0.5Ba2Ca2Cu3-xZnxO10−δx = 0, 1, and 2 superconducting phase. A continuous decrease in normal state resistivity and increase in Tc (0) values under applied magnetic field (i.e., from H = 0 to 5 T) was observed, which was an evidence of diminishing the anisotropic behavior, enhancement in coherence length, Fermi wave vector, and Fermi velocity of the carriers due to the improvement of inter-plane coupling associated with the reduction of Jahn-Teller distortions after Zn doping in CuO2 planes of CuTl-1223 system. The suppression of active Jahn-Teller distortions with Zn doping has reduced the volume of unit cell and enhanced the three dimensional (3D) superconducting properties of CuTl-1223 phase. The improvement in infield superconducting transport properties can also be attributed to the homogeneous and optimal charge distribution in conducting CuO2/ZnO2 planes of CuTl-1223 superconductor.

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Last updated on 2020-31-03 at 16:22